mirror of
https://github.com/ZDoom/raze-gles.git
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262 lines
9 KiB
C++
262 lines
9 KiB
C++
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//
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//---------------------------------------------------------------------------
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//
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// Copyright(C) 2017 Magnus Norddahl
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// Copyright(C) 2018 Rachael Alexanderson
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// All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program. If not, see http://www.gnu.org/licenses/
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//
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//--------------------------------------------------------------------------
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//
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#include <math.h>
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#include "c_dispatch.h"
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#include "c_cvars.h"
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#include "v_video.h"
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#include "templates.h"
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#include "printf.h"
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#define NUMSCALEMODES 7
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bool setsizeneeded;
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EXTERN_CVAR(Int, vid_aspect)
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CUSTOM_CVAR(Int, vid_scale_customwidth, VID_MIN_WIDTH, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
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{
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if (self < VID_MIN_WIDTH)
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self = VID_MIN_WIDTH;
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setsizeneeded = true;
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}
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CUSTOM_CVAR(Int, vid_scale_customheight, VID_MIN_HEIGHT, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
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{
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if (self < VID_MIN_HEIGHT)
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self = VID_MIN_HEIGHT;
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setsizeneeded = true;
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}
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CVAR(Bool, vid_scale_customlinear, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
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CUSTOM_CVAR(Bool, vid_scale_customstretched, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
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{
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setsizeneeded = true;
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}
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namespace
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{
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struct v_ScaleTable
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{
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bool isValid;
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bool isLinear;
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uint32_t(*GetScaledWidth)(uint32_t Width, uint32_t Height);
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uint32_t(*GetScaledHeight)(uint32_t Width, uint32_t Height);
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bool isScaled43;
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bool isCustom;
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};
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float v_MinimumToFill(uint32_t inwidth, uint32_t inheight)
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{
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// sx = screen x dimension, sy = same for y
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float sx = (float)inwidth, sy = (float)inheight;
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static float lastsx = 0., lastsy = 0., result = 0.;
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if (lastsx != sx || lastsy != sy)
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{
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if (sx <= 0. || sy <= 0.)
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return 1.; // prevent x/0 error
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// set absolute minimum scale to fill the entire screen but get as close to 640x400 as possible
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float ssx = (float)(VID_MIN_WIDTH) / sx, ssy = (float)(VID_MIN_HEIGHT) / sy;
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result = (ssx < ssy) ? ssy : ssx;
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lastsx = sx;
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lastsy = sy;
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}
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return result;
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}
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inline uint32_t v_mfillX(uint32_t inwidth, uint32_t inheight)
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{
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return (uint32_t)((float)inwidth * v_MinimumToFill(inwidth, inheight));
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}
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inline uint32_t v_mfillY(uint32_t inwidth, uint32_t inheight)
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{
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return (uint32_t)((float)inheight * v_MinimumToFill(inwidth, inheight));
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}
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v_ScaleTable vScaleTable[NUMSCALEMODES] =
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{
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// isValid, isLinear, GetScaledWidth(), GetScaledHeight(), isScaled43, isCustom
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{ true, false, [](uint32_t Width, uint32_t Height)->uint32_t { return Width; }, [](uint32_t Width, uint32_t Height)->uint32_t { return Height; }, false, false }, // 0 - Native
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{ true, true, [](uint32_t Width, uint32_t Height)->uint32_t { return Width; }, [](uint32_t Width, uint32_t Height)->uint32_t { return Height; }, false, false }, // 1 - Native (Linear)
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{ true, false, [](uint32_t Width, uint32_t Height)->uint32_t { return 640; }, [](uint32_t Width, uint32_t Height)->uint32_t { return 400; }, true, false }, // 2 - 640x400 (formerly 320x200)
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{ true, true, [](uint32_t Width, uint32_t Height)->uint32_t { return 960; }, [](uint32_t Width, uint32_t Height)->uint32_t { return 600; }, true, false }, // 3 - 960x600 (formerly 640x400)
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{ true, true, [](uint32_t Width, uint32_t Height)->uint32_t { return 1280; }, [](uint32_t Width, uint32_t Height)->uint32_t { return 800; }, true, false }, // 4 - 1280x800
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{ true, true, [](uint32_t Width, uint32_t Height)->uint32_t { return vid_scale_customwidth; }, [](uint32_t Width, uint32_t Height)->uint32_t { return vid_scale_customheight; }, true, true }, // 5 - Custom
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{ true, true, [](uint32_t Width, uint32_t Height)->uint32_t { return v_mfillX(Width, Height); }, [](uint32_t Width, uint32_t Height)->uint32_t { return v_mfillY(Width, Height); }, false, false }, // 6 - Minimum Scale to Fill Entire Screen
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};
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bool isOutOfBounds(int x)
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{
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return (x < 0 || x >= NUMSCALEMODES || vScaleTable[x].isValid == false);
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}
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}
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void R_ShowCurrentScaling();
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CUSTOM_CVAR(Float, vid_scalefactor, 1.0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
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{
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setsizeneeded = true;
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if (self < 0.05 || self > 2.0)
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self = 1.0;
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if (self != 1.0)
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R_ShowCurrentScaling();
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}
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CUSTOM_CVAR(Int, vid_scalemode, 0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
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{
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setsizeneeded = true;
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if (isOutOfBounds(self))
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self = 0;
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}
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CUSTOM_CVAR(Bool, vid_cropaspect, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
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{
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setsizeneeded = true;
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}
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bool ViewportLinearScale()
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{
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if (isOutOfBounds(vid_scalemode))
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vid_scalemode = 0;
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// hack - use custom scaling if in "custom" mode
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if (vScaleTable[vid_scalemode].isCustom)
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return vid_scale_customlinear;
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// vid_scalefactor > 1 == forced linear scale
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return (vid_scalefactor > 1.0) ? true : vScaleTable[vid_scalemode].isLinear;
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}
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int ViewportScaledWidth(int width, int height)
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{
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if (isOutOfBounds(vid_scalemode))
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vid_scalemode = 0;
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if (vid_cropaspect && height > 0)
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{
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width = ((float)width/height > ActiveRatio(width, height)) ? (int)(height * ActiveRatio(width, height)) : width;
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height = ((float)width/height < ActiveRatio(width, height)) ? (int)(width / ActiveRatio(width, height)) : height;
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}
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return (int)std::max((int32_t)VID_MIN_WIDTH, (int32_t)(vid_scalefactor * vScaleTable[vid_scalemode].GetScaledWidth(width, height)));
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}
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int ViewportScaledHeight(int width, int height)
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{
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if (isOutOfBounds(vid_scalemode))
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vid_scalemode = 0;
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if (vid_cropaspect && height > 0)
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{
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height = ((float)width/height < ActiveRatio(width, height)) ? (int)(width / ActiveRatio(width, height)) : height;
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width = ((float)width/height > ActiveRatio(width, height)) ? (int)(height * ActiveRatio(width, height)) : width;
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}
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return (int)std::max((int32_t)VID_MIN_HEIGHT, (int32_t)(vid_scalefactor * vScaleTable[vid_scalemode].GetScaledHeight(width, height)));
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}
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bool ViewportIsScaled43()
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{
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if (isOutOfBounds(vid_scalemode))
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vid_scalemode = 0;
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// hack - use custom scaling if in "custom" mode
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if (vScaleTable[vid_scalemode].isCustom)
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return vid_scale_customstretched;
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return vScaleTable[vid_scalemode].isScaled43;
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}
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void R_ShowCurrentScaling()
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{
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int x1 = screen->GetClientWidth(), y1 = screen->GetClientHeight(), x2 = ViewportScaledWidth(x1, y1), y2 = ViewportScaledHeight(x1, y1);
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Printf("Current vid_scalefactor: %f\n", (float)(vid_scalefactor));
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Printf("Real resolution: %i x %i\nEmulated resolution: %i x %i\n", x1, y1, x2, y2);
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}
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CCMD (vid_showcurrentscaling)
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{
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R_ShowCurrentScaling();
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}
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CCMD (vid_scaletowidth)
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{
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if (argv.argc() > 1)
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{
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// the following enables the use of ViewportScaledWidth to get the proper dimensions in custom scale modes
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vid_scalefactor = 1;
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vid_scalefactor = (float)((double)atof(argv[1]) / ViewportScaledWidth(screen->GetClientWidth(), screen->GetClientHeight()));
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}
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}
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CCMD (vid_scaletoheight)
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{
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if (argv.argc() > 1)
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{
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vid_scalefactor = 1;
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vid_scalefactor = (float)((double)atof(argv[1]) / ViewportScaledHeight(screen->GetClientWidth(), screen->GetClientHeight()));
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}
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}
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inline bool atob(char* I)
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{
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if (stricmp (I, "true") == 0 || stricmp (I, "1") == 0)
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return true;
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return false;
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}
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CCMD (vid_setscale)
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{
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if (argv.argc() > 2)
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{
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vid_scale_customwidth = atoi(argv[1]);
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vid_scale_customheight = atoi(argv[2]);
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if (argv.argc() > 3)
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{
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vid_scale_customlinear = atob(argv[3]);
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if (argv.argc() > 4)
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{
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vid_scale_customstretched = atob(argv[4]);
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}
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}
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vid_scalemode = 5;
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vid_scalefactor = 1.0;
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}
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else
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{
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Printf("Usage: vid_setscale <x> <y> [bool linear] [bool long-pixel-shape]\nThis command will create a custom viewport scaling mode.\n");
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}
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}
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CCMD (vid_scaletolowest)
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{
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uint32_t method = 0;
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if (argv.argc() > 1)
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method = atoi(argv[1]);
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switch (method)
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{
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case 1: // Method 1: set a custom video scaling
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vid_scalemode = 5;
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vid_scalefactor = 1.0;
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vid_scale_customlinear = 1;
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vid_scale_customstretched = 0;
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vid_scale_customwidth = v_mfillX(screen->GetClientWidth(), screen->GetClientHeight());
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vid_scale_customheight = v_mfillY(screen->GetClientWidth(), screen->GetClientHeight());
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break;
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case 2: // Method 2: use the actual downscaling mode directly
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vid_scalemode = 6;
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vid_scalefactor = 1.0;
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break;
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default: // Default method: use vid_scalefactor to achieve the result on a default scaling mode
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vid_scalemode = 1;
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vid_scalefactor = v_MinimumToFill(screen->GetClientWidth(), screen->GetClientHeight());
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break;
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}
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}
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